Definition of "phratry"

To be sure, he plays a decisive role at the time of the birth, since he confers on the child legitimacy, at least on the son, by taking him in his arms, walking him around the house and declaring him his son in front of the members of his phratry: in Athens, no one may obtain citizenship without these familial rites.

2016, Keith Cohen, translating Maurice Sartre, in Corbin, Courtine & Vigarello (Eds.), A History of Virility, Columbia University Press 2016, p. 40

The moieties are linked to or bear the names of beings or forces expressing the cosmic dichotomy. Most common are heaven and earth moieties, "above" and "below," or moieties named after birds and land animals (or aquatic animals), as is the case among the Winnebago and in the phratry system of the Northwest Coast Indians.

1979, Åke Hultkrantz, “The Great Tribal Ceremonies”, in Monica Setterwall, transl., The Religions of the American Indians, Berkeley, Los Angeles, Calif., London: University of California Press, published 1980, part I (Tribal Religions), page 112